619 	struct sem_undo *un;  in perform_atomic_semop()  local
623 	un = q->undo;  in perform_atomic_semop()
640 			int undo = un->semadj[sop->sem_num] - sem_op;  in perform_atomic_semop()
644 			un->semadj[sop->sem_num] = undo;  in perform_atomic_semop()
677 			un->semadj[sop->sem_num] += sem_op;  in perform_atomic_semop()
1089 	struct sem_undo *un, *tu;  in freeary()  local
1097 	list_for_each_entry_safe(un, tu, &sma->list_id, list_id) {  in freeary()
1098 		list_del(&un->list_id);  in freeary()
1099 		spin_lock(&un->ulp->lock);  in freeary()
1100 		un->semid = -1;  in freeary()
1101 		list_del_rcu(&un->list_proc);  in freeary()
1102 		spin_unlock(&un->ulp->lock);  in freeary()
1103 		kfree_rcu(un, rcu);  in freeary()
1270 	struct sem_undo *un;  in semctl_setval()  local
1324 	list_for_each_entry(un, &sma->list_id, list_id)  in semctl_setval()
1325 		un->semadj[semnum] = 0;  in semctl_setval()
1411 		struct sem_undo *un;  in semctl_main()  local
1451 		list_for_each_entry(un, &sma->list_id, list_id) {  in semctl_main()
1453 				un->semadj[i] = 0;  in semctl_main()
1654 	struct sem_undo *un;  in __lookup_undo()  local
1656 	list_for_each_entry_rcu(un, &ulp->list_proc, list_proc) {  in __lookup_undo()
1657 		if (un->semid == semid)  in __lookup_undo()
1658 			return un;  in __lookup_undo()
1665 	struct sem_undo *un;  in lookup_undo()  local
1669 	un = __lookup_undo(ulp, semid);  in lookup_undo()
1670 	if (un) {  in lookup_undo()
1671 		list_del_rcu(&un->list_proc);  in lookup_undo()
1672 		list_add_rcu(&un->list_proc, &ulp->list_proc);  in lookup_undo()
1674 	return un;  in lookup_undo()
1692 	struct sem_undo *un, *new;  in find_alloc_undo()  local
1701 	un = lookup_undo(ulp, semid);  in find_alloc_undo()
1703 	if (likely(un != NULL))  in find_alloc_undo()
1717 		un = ERR_PTR(-EIDRM);  in find_alloc_undo()
1736 		un = ERR_PTR(-EIDRM);  in find_alloc_undo()
1744 	un = lookup_undo(ulp, semid);  in find_alloc_undo()
1745 	if (un) {  in find_alloc_undo()
1757 	un = new;  in find_alloc_undo()
1763 	return un;  in find_alloc_undo()
1799 	struct sem_undo *un;  in SYSCALL_DEFINE4()  local
1848 		un = find_alloc_undo(ns, semid);  in SYSCALL_DEFINE4()
1849 		if (IS_ERR(un)) {  in SYSCALL_DEFINE4()
1850 			error = PTR_ERR(un);  in SYSCALL_DEFINE4()
1854 		un = NULL;  in SYSCALL_DEFINE4()
1896 	if (un && un->semid == -1)  in SYSCALL_DEFINE4()
1901 	queue.undo = un;  in SYSCALL_DEFINE4()
2080 		struct sem_undo *un;  in exit_sem()  local
2085 		un = list_entry_rcu(ulp->list_proc.next,  in exit_sem()
2087 		if (&un->list_proc == &ulp->list_proc) {  in exit_sem()
2099 		semid = un->semid;  in exit_sem()
2122 		un = __lookup_undo(ulp, semid);  in exit_sem()
2123 		if (un == NULL) {  in exit_sem()
2134 		list_del(&un->list_id);  in exit_sem()
2140 		list_del_rcu(&un->list_proc);  in exit_sem()
2145 			if (un->semadj[i]) {  in exit_sem()
2146 				semaphore->semval += un->semadj[i];  in exit_sem()
2174 		kfree_rcu(un, rcu);  in exit_sem()